gistfile1.h

static void segvHandler(int sig, siginfo_t *info, void *secret) {
    void *trace[100];
    char **messages = NULL;
    int i, trace_size = 0;
    unsigned long offset=0;
    ucontext_t *uc = (ucontext_t*) secret;
    sds infostring;
    REDIS_NOTUSED(info);

    redisLog(REDIS_WARNING,
        "======= Ooops! Redis %s got signal: -%d- =======", REDIS_VERSION, sig);
    infostring = genRedisInfoString();
    redisLog(REDIS_WARNING, "%s",infostring);
    /* It's not safe to sdsfree() the returned string under memory
     * corruption conditions. Let it leak as we are going to abort */
    
    trace_size = backtrace(trace, 100);
    /* overwrite sigaction with caller's address */
    if (getMcontextEip(uc) != NULL) {
        trace[1] = getMcontextEip(uc);
    }
    messages = backtrace_symbols(trace, trace_size);

    for (i=1; i<trace_size; ++i) {
        char *fn = findFuncName(trace[i], &offset), *p;

        p = strchr(messages[i],'+');
        if (!fn || (p && ((unsigned long)strtol(p+1,NULL,10)) < offset)) {
            redisLog(REDIS_WARNING,"%s", messages[i]);
        } else {
            redisLog(REDIS_WARNING,"%d redis-server %p %s + %d", i, trace[i], fn, (unsigned int)offset);
        }
    }
    /* free(messages); Don't call free() with possibly corrupted memory. */
    _exit(0);
}